<?php
//前台后台都可以公共使用的函数

//有选择性的过滤XSS,影响性能，尽量少用

function removeXSS($data){
	
	
	require_once './HtmlPurifier/library/HTMLPurifier.auto.php';
	$_clean_xss_config = HTMLPurifier_Config::createDefault();
	$_clean_xss_config->set('Core.Encoding', 'UTF-8');
	
// 	设置保留的标签
	$_clean_xss_config->set('HTML.Allowed','div,b,strong,i,em,a[href|title],ul,ol,li,p[style],br,span[style],img[width|height|alt|src]');
	$_clean_xss_config->set('CSS.AllowedProperties', 'font,font-size,font-weight,font-style,font-family,text-decoration,padding-left,color,background-color,text-align');
	
	
	$_clean_xss_config->set('HTML.TargetBlank', TRUE);
	$_clean_xss_obj = new HTMLPurifier($_clean_xss_config);
	
// 	执行过滤
	return $_clean_xss_obj->purify($data);
	

}